Nut-lock.



No. 75.891. Patenfe nec. I6, |902.

w. A. lsomsmsv.

NUT LOCK.

(Application med Feb. 28, 1902, ma modei.)

MQ/Xl 1% nuemkoz `the washer.

Uivrrnnv STATES wiLLrAMjAfsoMnner, -or nosron, MAssAoHUssrrs.

PATENT OFFICE.

l. l l.

'NUT-Lome 'srncinrcnrroti forming page ofrecerle raient No. 71 5,1891, dated December 1e,l 190e. 4 Application filed February 28, 1902. Serial No. QSJB'. (No modelJ .To alilukomft may concern:

Beiit known that'L'WILLIAM A. SoMnRnY,

a citizen of the' United States, residingatBos-- tonyin the' countyof'Suolk, State ofMassachusett's', havefinvente'd certain new and useful'lmprovements in 'Nut-Locks; and I'do hereby'declarefthe following to be a full,

clear, andexact'description of the invention,

such as will enable others skilled in the art to which it appertains to 'make and use the same. This invention relates tonut-locks; and it has for its object,to"prcvide a construction wherein the nut will be held. securely from` ac- ',cideutaldisplacemenawhile itmay-be forced from its flocked position when'desired.

, -A further object of the invention lis to provide an elementof the lock of such form'and materiales will `cause it to enter between a bolt and the wall'of an opening through'which .the bolt may be passed to preventwabbling of the bolt in thefopeniug;

Other objects and advantages of the invention will be understood from 'the lfollowing description.` I y' 1 f Y In the drawings forining a portion of this specification', and, inv which like numerals of reference indigeste similar1 parts in the several views, Figure' l/is a section taken longitudi- ,nally through-"a bolt and a body through 'which the bolt is passed andincluding also a nut and its locking-washer, constructed and arranged in accordance with vthe present inl ventiou. Fig. 2 is a perspective View showing the under side of the nut. Fig. 3 is a perspective View showing A'the under side of Fig. 4 is a View similar to Fig. 1, wherein the locking-teeth are carried by a supplemental' plate instead of by the nut.

Referring now to the drawings, there is shown a body 10, through which is a per fora tion 11, and through the perforation is passed abolt 12, the threaded end otwhich projects beyond the face 'of the body and is provided Awith a longitudinal groove 14, which intersects the threads. Upon the threaded end of the bolt is disposed a washer 15, which -is` made of lead o'r other soft metal and upon the under face of which,-A at the edge of the central opening o-f4 the washer, is an annular flange 17, which'is adapted to hug closely The nut is shown at 18, and when screwed upon the end direction` rotatably of, the nut.

ofthe bolt it compresses the washer and the iiange thereof, and the `metal of the 'liange is caused to :dow in part into the perforation 11 between the boltand the wall of the perforation. The metalof the flange thus acts as a packing for the perforation, so that the bolt fis held snugly and wahbling ot the bolt'in f ling with tf e pairs of teeth QOare single teeth 22, which also project downwardly from the bottonfibf the nut, and all of the seth are triangular, shown, and project 'lu the same y The outer teeth of all of the pairs of teeth 20 lie with their apices in a common circle concentric with the perforation or" the nut, while the in ner teeth of all of the pairs 'lie with their apicesin a smaller circle concentric with the perforation of the nut, while the apices of the teeth 22 lie in a common circle concentric with the nut and between the first two circles. As a result of this arrangement of the teeth, as the nut l.; screwed down against the washer three separ channels are plowed in the upper face of e washer. The pressure of the teeth again the washer is auch that after the nut is screwed up should the nut tend to reverse the teeth will engage into the metal of the washer and prevent returned rotation of the nut, except by application of considerable pressure thereto. The object in offsetting the series of single teeth with repartly closing the channels in the washer.` The pairs of teeth 20 throw up two furrows, while the teeth 22 throw up counter-furrows, which squeeze or force the .metal of thejirst furrows, so that said metal is caused t9 dow and partly till the channels formed by the teeth 2 0 by reducing the widths thereof. in this way the middle channels from each pair of teeth to the following single tooth are reduced in width, while the outer channels from each single tooth to the following pair of teeth are reduced in width, 4and in consequence proper biting of the teeth is insured.

ya seat 26 in its outer face to receive the nut,

it being understood that with this form of the invention the supplemental plates and washers may be sold for use in connection with any specific nut and threaded body.

A longitudinal slot 25 is formed in the stern of the bolt and permits the metal of the washer to positively engage the bolt, so that the washer is held positively against rotation.

In practice modifications ofthe specific constructions shown may be made, and any suitable materials and proportions may be used for the Various parts without departing from the spirit of the invention.

l. The combination with a perforated body and a threaded body passed through the perforation and itting loosely therein, of a malleable. washer disposed upon the threaded body and having an annular flange surrounding its opening and bridging the perforation between the wall thereof and the threaded body, and a nut screwed upon the threaded body and againstthe washer to force the flange into the perforation, the threaded body having a slot therein to receive a portion of the malleable washer.`

2. The combination with a threaded Abody and a malleable'plate surrounding said body, of a nut, and teeth carried by and projecting from the nut in the direction of the malleable plate, said teeth being arranged in concentric annular series of diierent radii and projecting all in the same direction rotatably said body having a longitudinal slot into which the metal of the plate may ow.

3.' The combination with a perforated body and a threaded body passed through the perforation and tting loosely therein, of a inalleable washer disposed upon the threaded body and having an annular flange surrounding its opening and lying in the perforation between the wall thereof and the threaded body, and a'nut screwed upon the threaded body and against the washer to force the flan ge into the perforation,said threaded body having a longitudinal slot to receive a portion of the metal of the washer.

4C. The combination with a body having an opening therein and a threaded body engaged with the opening, the diameter of the opening being greater than the diameter of the body, of a malleable washer disposed upon the threaded body and having a continuous flange surrounding the opening, the thickness of the flange being greater than the width of the interspace between the threaded body and the wall ofthe opening, and a nut screwed upon the threaded body against the washer to cause the flange thereof to flow into said interspace to pack the threaded body and prevent lateral movement thereof in the first-named opening.

In testimony whereof I aix my signature in presence of two witnesses.

WILLIAM A. SOMERBY. Witnesses:

F. R. ROBINSON, FRED P. HAYWARD. 

